docs: update comprehensive API documentation and project guides

This commit updates all documentation files throughout the project:

- Updated IMPLEMENTATION_PLAN.md with new implementation details
- Updated PROJECT_GUIDELINES.md with coding standards and practices
- Updated README.md with current project information
- Updated SCREENSHOT_AUTOMATION.md with new automation details
- Added TEST_DATA.md with test fixtures data
- Updated cover_image_serving_plan.md with static URL patterns

Documentation API updates:
- Updated API reference documentation for all endpoints including:
  - Authentication (login, logout, register, refresh_token)
  - Book matching (auto_link, bulk_link, link_book, search)
  - Collections (CRUD operations, shelf mappings, auto-assign rules)
  - Conflicts (bulk operations, resolve/dismiss)
  - Devices (registration, approval, shelf management)
  - Highlights (create, update, delete, get)
  - Kobo sync (bookmark, markup, initialization, sync)
  - KOReader sync (library, metadata, bookmarks, progress)
  - Libraries (CRUD, folders, media items, stats)
  - Media items (bulk operations, CRUD)
  - Notes (CRUD operations)
  - OPDS (acquisition, feeds, publication)
  - Progress (reading progress tracking)
  - Queue (device queue management)
  - Ratings (star ratings)
  - Scanner (watch mode, scan operations)
  - Sync protocols (Kobo, KOReader)
  - Users (profile, password, admin operations)
  - WebSocket protocols

- Updated user guides (admin, dashboard, settings, sync)
- Updated device setup guides (Kobo, KOReader)
- Updated developer guides (testing, contributing, operations)
- Updated scripts/README.md

docs/developer/api/websocket/protocol.md

@@ -8,14 +8,14 @@ Real-time sync events broadcast to connected clients.
 
 ### Connection Parameters
 
-| Parameter | Type | Required | Description |
-|-----------|------|-----------|-------------|
-| token | string | Yes | JWT authentication token |
+| Parameter | Type   | Required | Description              |
+| --------- | ------ | -------- | ------------------------ |
+| token     | string | Yes      | JWT authentication token |
 
 ### Example Connection
 
 ```javascript
-const ws = new WebSocket('wss://bookhoard.com/ws/sync?token=eyJhbG...');
+const ws = new WebSocket("wss://bookhoard.com/ws/sync?token=eyJhbG...");
 ```
 
 ## Message Format